Can mass balance be trusted in estimating N loss for meat-poultry housing?

Hong Li, Hongwei Xin, Robert Burns, Larry Jacobson, Sally Noll, Steven Hoff, Jay Harmon, Jacek Koziel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Quantification of ammonia loss from animal feeding operations by measuring gaseous concentration and air exchange through the emitting source is not always practical, e.g., under natural ventilation conditions. Mass balance over an extended period of time may offer possibilities of remedy. This study compares two NH3-N emission estimate approaches for a commercial turkey grow-out house over one year period: a) a concentration-flow-integration (CFI) method (considered as the reference method), and b) a nitrogen (N) mass-balance method. The CFI NH3-N emission was determined by continuously measuring the NH3 concentration and exhaust air flow rate through the turkey house with a state-of-the-art mobile air emission unit. The mass-balance N emission was calculated by balancing the total N inputs (new bedding, young birds, feed) and N output (litter cake removed between flocks, litter removed at cleanout, amount of marketed birds, mortality, and body N content). The production-related data were acquired from the records kept or presented to the cooperative producer. The results revealed unexpectedly large discrepancy in NH3-N loss between the two methods. The outcome of this study cast serious doubt about the adequacy of using mass balance for estimating NH 3 emissions from a dynamic production system such as turkey houses.

Original languageEnglish (US)
Title of host publicationAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009
Pages3353-3367
Number of pages15
StatePublished - 2009
EventAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2009 - Reno, NV, United States
Duration: Jun 21 2009Jun 24 2009

Publication series

NameAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009
Volume5

Other

OtherAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2009
CountryUnited States
CityReno, NV
Period6/21/096/24/09

Keywords

  • Ammonia
  • Comparison
  • Emission
  • Mass balance
  • Nitrogen
  • Uncertainty

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  • Cite this

    Li, H., Xin, H., Burns, R., Jacobson, L., Noll, S., Hoff, S., Harmon, J., & Koziel, J. (2009). Can mass balance be trusted in estimating N loss for meat-poultry housing? In American Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009 (pp. 3353-3367). (American Society of Agricultural and Biological Engineers Annual International Meeting 2009, ASABE 2009; Vol. 5).